A teardown of the upcoming update to Gmailfor Android -- Gmail 4.6 -- revealed numerous confirmations that ads lay lurking in the update from Google Inc. (GOOG), as well as showcasing some welcome improvements.

Notably Android Policefound strings, 8 classes, and even a full library with "Ad" in their names in the Gmail APK. A big question left unanswered by the teardown is whether the feature will harass users with fake email ads, a feature added in a recent controversial update to the desktop browser client, or simply ad normal banner ads like those found in many free (ad-supported) Android games.

The Droid Guyis claiming the changelog for Gmail 4.6 hints that the new mobile ads will be in the form of email spam.

Gmail 4.6 [Image Source: Android Police]

The update does bring some welcome changes in a heavy overhaul to the Gmail card, including a warning about unset messages, new icons for contacts you don't have a picture of (a stylish letter from their first initial), and darker UI icons.

left: Before the autopicture; right: After the update. [Image Source: Android Police]

The reviewers were indifferent or perhaps slightly negative on the decision to do away with the "cancel" button in the email "send" dialogue, which now requires you to press the "back" button (beneath the screen) to cancel.

Most Android users should get the tile "upgrade" sometime later this week, bringing their freeloading mobile Gmail days to an end.

"Intel is investing heavily (think gazillions of dollars and bazillions of engineering man hours) in resources to create an Intel host controllers spec in order to speed time to market of the USB 3.0 technology." -- Intel blogger Nick Knupffer